Is someone able to explain me how #fontbakery works? #help

Surreal: read an interesting article about a #TruFont developer https://medium.com/type-thursday/open-source-font-software-6d58b389a2e0 , found twitch video of him re-creating a logo I once did for #FontBakery, then finding the project is still alive and kicking http://www.fontbakery.com